brig-ham



(No Model.)

S. 0. BRIG 0 ING IEVB FABRIC AND M 0F MAKING THE s 265 Patented Oct. 3,V 1

"Unire *rares trice.

SILAS 0. BRIGHAM, OF NEV YORK, N. Y.

SPECIFICATION forming' part of Letters Patent No. 265,302, dated October 3, 1882.

Application filed April 25, 1882. (No modclJ To all whom it may concern Beit known that I, SiLAs O. BRIGUAM, of the city, county, and State of New York, have invented certain Improvements in Bolting and Sieve Fabrics and Method of Making the Same, of which the following is a specification.

lhis invention is more particularly designed to provide a bolting` cloth, either of silk, wire, or other suitable material, which shall be capable of attachment to the ribs of a bolting-reel with much greater security against injury to the fabric or material than has hitherto been attained, the invention being also capable ofadvantageous application to the shahing-sieves, purifiers, Ste., variously used in milling, and also to sieves used for or applied to other purposes.

rlhe invention comprises certain novel combinations of parts, and also a novel method or process of making or manufacturing the same.

Figure l is a. plan view, representing the article embraced in my said invention. Fig. 2 is a transverse sectional View of the same on an enlarged scale, and Fig. 3 is a diagram illustrating the manner in which the parts comprised in the said articles are united.

- A is the bolting fabric-in other words, the sifting fabricwhich may be silk or ordinary boltingcloth, or preferably of wire-cloth of snitable mesh or character of wire. This cloth or fabric, whatever its character, as aforesaid, may be made in pieces or strips of any suitable length, and when the same is to be applied to a boltin g-reel should be of such width that one of its longitudinal edges will rest upon one of the ribs of the reel, while the opposite longitudinal edge rests upon one of the adjacent ribs, and so on. Each longitudinal edge t has placed upon each side a longitudinal strip, B, of sheet india-rubber. These strips may, when desired, be made in one piece folded so. that one portion is above and the other below the fabric.

Placed over the strips B, of india-rubberthat is to say, upon the external surface of the india-rubberstrips-is a piece of cloth, G, which may be folded around the edge, as shown at c. This cloth is preferably that commonly known as tiching5 but any other cloth -of suitable strengthand exibility may be used.

The parts, being arranged as just set forth,

are passed between rollers under conditions which subject the india-rubber to the action of heat as well as pressure, the result being tliatthe two strips B, of india-rubber, have their inner surfaces firmly cemented together through the interstices of the fabric, while each individual thread or wire of the latter is embedded in and firmly retained bythe india-rubber embedded thereon, the fabric being simultaneously firmly cemented to the cuter surface of the india-rubber by the combined action ofthe heat and pressure. Each piereor length of the fabric having its two opposite edges provided with the india-rubber B and cloth C may be readily attached to the ribs of the reel by tacks driven through the india-rubber and cloth, or, when desired, by sewing the two contiguous edges o'f adjoining strips or pieces together. Inas' m'uch as all the transverse threads or wires of the fabric are firmly embedded separately and collectively in the india-rubber, it follows that there is no inequality of strain upon said threads or wires. rlhere is no such direct contact of the fabric with the ribs as would cause unequal working or wearing of the fabric or anyof its threads or wires, and a perfectly-dexible but strong and uniform connection of all ofthe edges of each piece or length ofthe sifting fabric to the ribs of the reel is secured.

In the manufacture of the article aforesaid it is preferred that the edges provided with the india-rubber and the cloth, as described, shall be passed through suitable heated rollers, which Will apply heat and pressure simultaneously to eect the simultaneous attachment of the india-rubber to the edges of the fabric and of the cloth to the india-rubber. When preferred, the india-rubber before heilig applied may be itself softened by any suitable means, and in this semi-plastic condition may be applied in place, and have the cloth applied to the outer surfaces thereof'. In such cases lthe pressure may be applied by ordinary pressure-rollers at ordinary temperatures. When desired, however, the cloth or ticking C may be coated on one side with india-rubber of the requisite depth or thickness, and by any ordinary or suitable means. This com pound material may be cut into strips of suitable width, and these may he folded over the edges of the bolting IOO fabric A, and then compressed thereon under conditions of heat and pressure to insure the lirm adhesion ot' the adjoining' surfaces ofthe india-rubber, and the attachment of said combined material to the edges of the bolting fabricA.

Ordinarily the india-rubber B and cloth G, when applied to the bolting fabric as aforesaid, should extend inward from the outer edge about one and one-half inch that is to say, when the strips Ot' india-rubber and cloth are folded over the edge upon the opposite sides of the bolting fabric, as hcreinbet'ore described, said strips of india-rubber and cloth should have the width of about three inches.

In lieu of' india-rubber, any of the usual or known equivalents thereof may be employedthat is to say, substances having like properlies of elasticity, strength, plasticity, and adhesivencss, combined with the property of more or less softening under conditions of heatsuoh, for example, as the compound very generally known as a cement7 composed of indiarubber, litharge, and white lead.

"What I claim as my invention is ll. The combination, with a bolting` or sifting fabric, A, of' the layers B, of plastic, elastic, and adhesive material, having their inner surfaces united through the meshes or interstices ot' the fabric A, and the layer of cloth C, applied and cemented to the external surfaces of the layers B, all substantially as and for the purpose herein set forth.

2. The herein-described method of attaching the layers of india-rubber B and cloth C to the bolting or sifting fabric A, consisting essentially in placing the said parts in their relative positions, and then compressing the indiarnbber upon the opposite sides of the fabric A and the cloth upon the outer surfaces of the india-rubber by the conjoint action of heat and pressure, substantially as and for the purpose herein set forth.

SILAS O. BRIGHAM.

\Vituesses:

ltoixunr W. MATTHEWS, TIIoMAs E. GRossMAN. 

